Returns an integer attribute specified by the attribute ID parameter for a device specified by the session in and index in parameters.

The session in parameter is expected to be a valid handle returned by niModInst Open Installed Devices Session. Therefore, this parameter acts as a handle to a list of installed devices. The index in parameter specifies the device in the list for which you want the attribute.


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Inputs/Outputs

  • cgenclassrn.png session in —

    session in is the NI-ModInst session handle created by niModInst Open Installed Devices Session.

  • ci32.png index in —

    index in is a zero-based index that specifies the device for which you want the attribute.

    The index in parameter should be between 0 and (device count – 1), inclusive, where device count is the number of installed devices returned by niModinst Open Installed Devices Session.

  • ci32.png attribute ID —

    attribute ID is the ID of the integer attribute you want to query.

    Valid Values

    Slot Number—the slot (for example, in a PXI chassis) in which the device is installed. This attribute can only be queried for PXI devices installed in a chassis that has been properly identified in MAX.

    Chassis Number—the number of the chassis in which the device is installed. This attribute can only be queried for PXI devices installed in a chassis that has been properly identified in MAX.

    Bus Number—the bus on which the device has been enumerated.

    Socket Number—the socket number on which the device has been enumerated.

    Note The bus number and socket number can be used to form a VISA resource string for the device, of the form PXIn::x::INSTR, where n is the bus number and x is the socket number. For example, for bus number 2 and socket number 13, use PXI2::13::INSTR.
  • cerrcodeclst.png error in (no error) —

    error in describes error conditions that occur before this VI or function runs.

  • igenclassrn.png session out —

    session out has the same value as session in.

  • ii32.png index out —

    index out has the same value as index in.

  • ii32.png attribute value —

    attribute value returns the value of the requested attribute.

  • ierrcodeclst.png error out —

    error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces.